feat(backup): fold .picpeak restore into the Restore wizard's Upload source

Removes the redundant standalone .picpeak card. The wizard's 'Upload
Backup' source now splits into two kinds: '.picpeak backup' (the working
portable restore — renders the upload + destructive-confirm flow inline)
and 'Manifest + files' (legacy, still 'Manifest Upload functionality
coming soon'). en + de strings added.

frontend/src/components/admin/RestoreWizard.jsx

@@ -1,5 +1,6 @@
 import React, { useState } from 'react';
 import { useTranslation } from 'react-i18next';
+import { PicpeakRestoreCard } from './PicpeakBackupCard';
 import {
   RefreshCw,
   AlertTriangle,
@@ -283,14 +284,49 @@ export const RestoreWizard = ({ onVerifyIntegrity } = {}) => {
       )}
 
       {restoreData.source === 'upload' && (
+        <div className="space-y-4">
+          {/* Two upload kinds: the working portable .picpeak restore, and the
+              legacy manifest+files upload (still a stub). */}
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+            <button
+              onClick={() => setRestoreData(prev => ({ ...prev, uploadType: 'picpeak' }))}
+              className={`p-6 rounded-lg border-2 transition-all ${
+                restoreData.uploadType === 'picpeak'
+                  ? 'border-primary bg-accent-dark/15'
+                  : 'border-neutral-200 dark:border-neutral-600 hover:border-neutral-300 dark:hover:border-neutral-500'
+              }`}
+            >
+              <FileArchive className={`h-10 w-10 mb-2 mx-auto ${restoreData.uploadType === 'picpeak' ? 'text-primary' : 'text-neutral-400'}`} />
+              <h4 className="font-medium text-neutral-900 dark:text-neutral-100">{t('backup.restore.source.upload.picpeak.name', '.picpeak backup')}</h4>
+              <p className="text-xs text-neutral-500 dark:text-neutral-400 mt-1">{t('backup.restore.source.upload.picpeak.description', 'Portable full backup — restores everything (full override, keeps your current account).')}</p>
+            </button>
+            <button
+              onClick={() => setRestoreData(prev => ({ ...prev, uploadType: 'manifest' }))}
+              className={`p-6 rounded-lg border-2 transition-all ${
+                restoreData.uploadType === 'manifest'
+                  ? 'border-primary bg-accent-dark/15'
+                  : 'border-neutral-200 dark:border-neutral-600 hover:border-neutral-300 dark:hover:border-neutral-500'
+              }`}
+            >
+              <Upload className={`h-10 w-10 mb-2 mx-auto ${restoreData.uploadType === 'manifest' ? 'text-primary' : 'text-neutral-400'}`} />
+              <h4 className="font-medium text-neutral-900 dark:text-neutral-100">{t('backup.restore.source.upload.manifest.name', 'Manifest + files')}</h4>
+              <p className="text-xs text-neutral-500 dark:text-neutral-400 mt-1">{t('backup.restore.source.upload.manifest.description', 'Upload a manifest and its backup files (legacy format).')}</p>
+            </button>
+          </div>
+
+          {restoreData.uploadType === 'picpeak' && <PicpeakRestoreCard />}
+
+          {restoreData.uploadType === 'manifest' && (
             <Card className="p-4">
               <div className="text-center py-8">
                 <Upload className="h-12 w-12 mx-auto mb-3 text-neutral-400" />
-            <p className="text-sm text-neutral-600 dark:text-neutral-400">{t('backup.restore.source.upload.comingSoon')}</p>
+                <p className="text-sm text-neutral-600 dark:text-neutral-400">{t('backup.restore.source.upload.manifestComingSoon', 'Manifest Upload functionality coming soon')}</p>
               </div>
             </Card>
           )}
         </div>
+      )}
+    </div>
   );
 
   const renderBackupSelection = () => (

frontend/src/i18n/locales/de.json

@@ -634,7 +634,16 @@
         "upload": {
           "name": "Backup hochladen",
           "description": "Eine Backup-Datei hochladen",
-          "comingSoon": "Upload-Funktion kommt bald"
+          "comingSoon": "Upload-Funktion kommt bald",
+          "manifestComingSoon": "Manifest-Upload-Funktion kommt bald",
+          "picpeak": {
+            "name": ".picpeak-Backup",
+            "description": "Portables Voll-Backup — stellt alles wieder her (vollständige Überschreibung, Ihr aktuelles Konto bleibt erhalten)."
+          },
+          "manifest": {
+            "name": "Manifest + Dateien",
+            "description": "Ein Manifest und die zugehörigen Backup-Dateien hochladen (Legacy-Format)."
+          }
         },
         "configuration": {
           "s3": "S3-Konfiguration",

frontend/src/i18n/locales/en.json

@@ -3022,7 +3022,16 @@
         "upload": {
           "name": "Upload Backup",
           "description": "Upload a backup file",
-          "comingSoon": "Upload functionality coming soon"
+          "comingSoon": "Upload functionality coming soon",
+          "manifestComingSoon": "Manifest Upload functionality coming soon",
+          "picpeak": {
+            "name": ".picpeak backup",
+            "description": "Portable full backup — restores everything (full override, keeps your current account)."
+          },
+          "manifest": {
+            "name": "Manifest + files",
+            "description": "Upload a manifest and its backup files (legacy format)."
+          }
         },
         "configuration": {
           "s3": "S3 Configuration",

frontend/src/pages/admin/BackupManagement.tsx

@@ -23,7 +23,7 @@ import { BackupDashboard } from '../../components/admin/BackupDashboard';
 import { BackupConfiguration } from '../../components/admin/BackupConfiguration';
 import { BackupHistory } from '../../components/admin/BackupHistory';
 import { RestoreWizard } from '../../components/admin/RestoreWizard';
-import { PicpeakExportCard, PicpeakRestoreCard } from '../../components/admin/PicpeakBackupCard';
+import { PicpeakExportCard } from '../../components/admin/PicpeakBackupCard';
 import { BackupIntegrityCard } from '../../components/admin/BackupIntegrityCard';
 import { BackupCoverageCard } from '../../components/admin/BackupCoverageCard';
 import { api } from '../../config/api';
@@ -229,10 +229,7 @@ export const BackupManagement: React.FC = () => {
         )}
 
         {activeTab === 'restore' && (
-          <div className="space-y-6">
-            <PicpeakRestoreCard />
           <RestoreWizard onVerifyIntegrity={() => setActiveTab('integrity')} />
-          </div>
         )}
 
         {activeTab === 'integrity' && (